What are you talking about? The same can be said about 59F (15°C) and 60F (15.56°C)

"One fahrenheit increment doesn't feel like anything"

At least Celsius are grounded in reality, should I be worried about ice? Just check if temperature is below 0°C. But hey you may need to check if your solution of water, ice and ammonium chloride is frozen, so I just need to check if below 0F. That's probably something you do often right?

theyre both grounded in reality because the represent real temperature conditions.

theyre both just arbitrary degrees though, since 0 isnt actually 0. they both have better alternatives too - Kelvin and Rankin. your criticism about freezing applies to celsius too. freezing is at a certain pressure and temperature, so both the 100 and 0 celsius only sometimes describe boiling and freezing